Re: [PATCH 1/6] mm: get_user_pages: consolidate error handling

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On 10/11/18 11:30 PM, Balbir Singh wrote:
On Thu, Oct 11, 2018 at 11:00:09PM -0700, john.hubbard@xxxxxxxxx wrote:
From: John Hubbard <jhubbard@xxxxxxxxxx>

An upcoming patch requires a way to operate on each page that
any of the get_user_pages_*() variants returns.

In preparation for that, consolidate the error handling for
__get_user_pages(). This provides a single location (the "out:" label)
for operating on the collected set of pages that are about to be returned.

As long every use of the "ret" variable is being edited, rename
"ret" --> "err", so that its name matches its true role.
This also gets rid of two shadowed variable declarations, as a
tiny beneficial a side effect.

Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
---

Looks good, might not be needed but
Reviewed-by: Balbir Singh <bsingharora@xxxxxxxxx>


Thanks for the review, very good to have another set of eyes on
this one.

--
thanks,
John Hubbard
NVIDIA



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